Picture titles no longer show as caption in blog

In the past when inserting a picture into the blog post, the title was automatically added as caption and displayed in the blog. This is no longer happening. Any idea on how to get that automatic adding of picture titles as caption turned on again?

The option is still there and should work, but you need to click on the right link and that might not be immediately clear.

When you're inserting photos there's several options to click on. You can click on "thumbnail", "regular" or "large". Those will not include a caption. Next to each of those is a small icon that is supposed to resemble a photo with a speech bubble over the top. If you click on that one then it will insert that size but with a caption. Or finally, maybe the simplest is to click on the small photo itself , which will insert a regular sized photo with a caption.